We describe the characterization of a novel Rickettsia species cultivated from Dermacentor ticks collected in Russia and France, for which we propose the name Rickettsia raoultii sp. nov. Using… (More)

Dermacentor nuttallii from Siberia, Rhipicephalus sanguineus from Crimea, and Rh. pumilio from the Astrakhan region were infected with Rickettsia sibirica (12%), R. conorii (8%), and the Astrakhan… (More)

In order to investigate human-louse phylogeny, we partially sequenced two nuclear (18S rRNA and EF-1 alpha) and one mitochondrial (COI) genes from 155 Pediculus from different geographical origins.… (More)

Senescent cells (SCs) have been considered a source of age-related chronic sterile systemic inflammation and a target for anti-aging therapies. To understand mechanisms controlling the amount of SCs,… (More)

BACKGROUND
Manipulation of host cell death is an important determinant of the outcome of an infection. Here, we investigate whether Rickettsia rickettsii-infected host endothelial cells resist the… (More)

Pathogenic Rickettsia species are Gram-negative, obligate intracellular bacteria responsible for the spotted fever and typhus groups of diseases around the world. It is now well established that a… (More)

Ehrlichiae are obligatory intracellular, Gram-negative bacteria which belong to the alpha subclass of the phylum Proteobacteria and are responsible for infectious diseases of humans. Little is known… (More)